SPX2951ACS-L-5-0 Exar Corporation, SPX2951ACS-L-5-0 Datasheet - Page 3

• Manufacturer Part Number: SPX2951ACS-L-5-0
• Description: 150 MA Low Dropout Voltage Regulator
• Manufacturer: Exar Corporation

Specifications of SPX2951ACS-L-5-0

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: Up to 30V
• Voltage - Dropout (typical): 0.3V @ 150mA
• Number Of Regulators: 1
• Current - Output: 150mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS: Continued
Electrical characteristics at V
the full operating temperature range.
Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided by
the total temperature range.
Note 2: Unless otherwise specified all limits are guaranteed for T
Additional conditions for the 8-pin versions are feedback tied to 5V tap and output tied to output sense (V
and V
Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes
in output voltage
due to heating effects are covered under the specification for thermal regulation.
Note 4: Line regulation for the SPX2951 is tested at I
regulation versus temperature and load current.
Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below
its nominal value measured at 1V differential. At very low values of programmed output voltage, the minimum input
supply voltage of 2V ( 2.3V over temperature) must be taken into account.
Note 6: V
Note 7: Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the
nominal reference voltage measured at 6V input. To express these thresholds in terms of output voltage change,
multiply by the error amplifier gain = V
the error output is guaranteed to go low when the output drops by 95mV x 5V/1.235 = 384mV. Thresholds remain
constant as a percent of V
7.5% guaranteed.
Note 8: V
DATE: 12/01/04
PARAMETER
Error Comparator
Output Leakage Current
Output Low Voltage
Upper Threshold Voltage (Note 7)
Lower Threshold Voltage (Note 7)
Hysteresis
Shutdown Input
Input Logic Voltage
Shutdown Pin Input Current V
Regulator Output Current (Note 8)
in Shutdown
SHUTDOWN
REF
SHUTDOWN
≤V
OUT
≤ 0.8V.
≤(V
≥ 2V, V
IN
-1V),2.3≤V
CONDITIONS
V
V
I
(Note 7)
Low (Regulator ON)
High (Regulator OFF)
V
0L
OUT
IN
0H
IN
S
S
IN
=400µA
=2.4V
=30V
=V
= V
=30V
≤ 30V, V
as V
O
O
-0.5V
+1V, I
SPX2950/SPX2951 150mA Low Dropout Voltage Regulator
OUT
IN
≤30V, 100µA≤I
OUT
L
OUT
is varied, with the dropout warning occurring at typically 5% below nominal,
=100µA, C
/V
= 0, Feedback pin tied to 5V/ 3.3V tap.
REF
= (R
L
=1µF (note 2) T
1
+ R
L
MIN
≤150mA, T
2.0
40
2
3
L
)/R
= 1mA. See typical performance characteristics for line
2.
A
For example, at a programmed output voltage of 5V,
=25°C, unless otherwise specified. Boldface applies over
TYP
0.01
150
400
1.3
60
75
15
30
3
J
J
≤T
= 25°C, V
JMAX
MAX
250
800
0.7
50
10
95
.
1
IN
= V
MIN
2.0
40
O
+1V, I
TYP
0.01
L
150
400
1.3
60
75
15
30
©Copyright 2004 Sipex Corporation
= 100µA and C
3
MAX
250
800
0.7
95
50
10
1
OUT
L
UNITS
= 1µF.
mV
mV
mV
mV
= 5V)
µA
µA
µA
µA
V
V